Shaft-collar.



- No.8953408l A PATENTED Ami 4,1908.

I H. T. HALLOWELL.

SHAFT COLLAR.

AYPLICATIQH TILED EAR. 20, 190B.

' PATENTED AUG. 4, 1908. H. T. HALLOWELL. v V

SHAFT COLLAR. nruoumx mum nu. 2o, 19oa,

2 SHEETS-8HBET 2.

UNITED sira'rns PlgENT cr mes- PRESSED STEEL COBIPANY, OF PHILADE ePENNSYLVANIA.

"HOWARD T. lIALLOVFELL. OF PHILADELPHIA, PENNSYLVANIA, L-XSSIGXOR TOSTANDARD LPHL'L, PENNSYLVANIA, A CORPORATION OF SHAFT-COLLAR.

Application filed March 20,

T 0 all whom it may concern:

Be it known that I, I'IOWARD T. HALLO- WELL, a citizen of the UnitedStates, residing in Philadelphia, Pennsylvania, have invented certainImprovements in Shaft-Collars, ofwhich the following is a specification.

My invention relates to the construction of an annulus, such as a shaftcollar, and the object of my invention is to form a shaft collar off'aplurahty of sheet metal members pressed intoxthe desired shape and soconstrueted as; be mutually confined together and to receiv Ba set screwfor normally retaining suclronnulus or collar in place upon a shaft orotliersiniilar element.

Other features if my invention are more fully referred to hereinafter,reference being had to the accomp- -ny' ing drawings, in which:

Figure 1, is a per 'w'ctive view of one form of shaft collar embodyingmy invention in the. fully assembled fomnready for use; Fig. 2, is aperspective view of rhe members form ing the same, prior to assembling;3, is a vertical sectional view of\ the form of collar shown in 1; Fig.4, iso fragmentary sectional view on the line ai," Fig. 3; Figs. 5 and6, are views similar to Figs. 3 and 4, illustrating a modified form ofstructure embodying my invention; Fig. 7, is a perspective view of anutand washer employed with such form of collar; Fig. 8, is a sectionalview of said washer; Figs- 9 and, 10, both inclu3- sive, are sectionalviews illustrating different forms of sheet metal sections combined toform collars embodying my invention; Figs. 11 and 12, illustrate furthermodifications embodying my invention; Figs. 13, 14 and 15, are pers)ective views illustrating modified forms 0 nuts for use in connectionwith various forms of collars or annuli embodying my invention; Figs- 16and 17, are views illustrating a form of collar in which the peripheralwalls of the members are tapped for the reception of the set screw; andFigs. 18, 19 and 20. are views illustrating modifications of suchstructure- My present invention comprises certain improvements in theshaft collar or annulus forming the subject of my application for patenttiled Apr-i120, 1907 .Se'rial No. 336,369, the object of my presentimprovements being to increase the strength of the collar; to facilitatethe netention of the nut bythe embers "r"|'1i"" the same, and tofacilitate Specification of Letters Patent.

1908. Seria1No.&22,Il17.

Patented Aug. 4, 1908.

employed with such collars, and in certain 65 K;

other instances to be tapped directly for the reception of said setscrew. t

The structure shown in Figs. 1, 2, 3 and 4 comprises membersl and 2,each of said I members -having peripheral walls 3 and 4 0 and side walls5 and 6 oppositely disposed with respect to each other, which members,have been previously formed from sheet metal blanks by suitable dies.These mem bers are provided with registering apertures 7 in theirperipheral walls providing for the passage of a set screw 8, said setscrew bein arranged to en 'age a nut or other threade support 9 which ismotulted within the hollowspace formed by the members 1 and 2, andconfined by suitable means in proper relative position to theregistering apertures of the members forming the collar. The aperture inthe peripheral wall of the outer member is considerably enlarged so asto aceommodate the head of the set screw.

To maintain the members 1 and 2, forming the'collars in proper )ositionwith relation to each other, I reduce the er '0 of the peripheral wall 3of the member 1 as indicated at 10 in Fig. 2, and turn down said reducedportion against the side wall 6 of the section 2, as clearly indicatedin Figs. 1 and- .2, said latter wall being offset at its margin asindicated at 11 to receive the turned over part; such action binding themembers together and holding them against dis )lacement. If desired, themembers may l welded or otherwise permanently secured together, inaddition to the provisionjor engagement just noted. The nut or support9, through which the set screw 8 asses, is l 'd adjacent the membersforming t to collar during the process of finally securmg the sametogether, and to retain this nut in place against dislodgment orrattling, I may provit e vs.- rious means, such for instance asdisplacing the metal of the inner member of the collar e in properrelative posi-i )e brazed, electrically l i 4 l as clearly shown at 12in Figs. 2, 3 and 4, or at 12 in Figs. 5 and 6, of the drawings, whichmay be done by means of a suitable tool. In addition, tl e peripheralwall of the inner member is provided with a boss 13 surrounding itsaperture 7 and forming a flat seat for the nut.

The inner member? forming a part of the collar has an annular flange 14which fits the inner surface of the peripheral wall of the outer member,and in Figs. 2, 3 and 4, the nut is shown as held by the displacement ofmetal adjacent to or forming art of said flange. The use'of the flangewit 1 the nut in engagement therewith leaves a considerable spacebetween such nut and the inner surface of the peripheral wall of theouter membar, and to fill the same, I may provide a nut of the typeshown in Fig. 13, havin a re duced portion 15 formed on the are 0? acircle for engagement by said flange 14 of the inner member; such nutbeing shown in position in Figs. 3 and 4. In lieu of using this form ofnut, I-may employ a plain nutand rovide a spacing member or Washer suchas indicated at 16, m Figs. 5, 6, 7 and 8, to fill the s ace between themargin of the flange 14 and t 1e side wall of the outer member. Thisslpaeing member is apertured at' 17 and unerlies the enlarged a erture 7in the wall of the outer member. 11 this instance, the nut is held inposition against lateral movement by displacing a portion of the metalof the peripheral wall of the inner member as shown at 12, in Figs. 5and 6. The construction of such structure is otherwise similar to thatshown in Figs. 1 and 2, except for the employment of the spacing member.Instead of positioning the nut by the use of a spacing member, I mayprovide one with spuds or )rojcctions 18 as indicated in Fig. 14, whereyit may be riveted to the side walls of the inner and outer membersforming the collar. This nut is reduced at 15 to'accommodate the flange.14.

The nuts which I propose to employ in connection with my im )roved formof shaft' collar are tapped out 0 center in order that they may have asufficient iortion of their body disposed beyond the ilan 'e 14 of theinner member forming iart of the shaft collar. The nut, it will benoted, is so positioned as to engage the inner surface of'said flange 14and also bear against the inner surface of the peripheral wall of theouter member which is made of much heavier metal. \Vith thisarrangemenhthe greatest amount of strain is brought against theright-angled bend of the outer member, thereby relievingthe strain whichwould otherwise be transmitted to the flange 14 of the inner member,which member I prefer to make of very thin metal, as indicated. In fact,this inner member is employed principally to fill out the structure andto serve as one means of prerventing radial displacement of the nut. If

desired, the nuts may be oblong/ in order to brim the edges of theirlong sides chn er to the-avail of the outer member.

i r further feature of" tapping the nuts out of center, is that whencounter-boring or enlargihg the aperture in the walliof the outermember, I am obliged to out almost clearacross this wall to accommodatethe head of. the set screw, and if the out were cent ally bored, itwouldbring the aperture closer to the margin of the )eripheral wall of theouter member andgreat y limit the strength of the" same at that point.

It will, of'course, be understood by those skilled in theart that minorchanges in the construction or my improved shaft coilar may be madewithout departing from my in vention. For instance, if desired, insteadof tapping the nuts out of center, I may provide narrow nuts centrallytapped and somewhat longer than those shown and bend th m in "the arc ofa circle so as to fit the space formed between the inner and outermembers term ing the shaft collar, such, for instance,\ as

shown at 9 in Fi 15. In this event, the "1 wall of theinner shell neednot'overlsp the nut, for the latter being bent to the arcof'\ curvatureof the members, the outer periph-- eral wall will be sufficiently stiffto resist the pull of the set screw. Such nut will be retained in placein the usual manner by displacing against the same a portion of themetal of one of the membersof the collar.

Figs. 9 and 10, illustrate various forms of shaft eollaisof differentcross-sectional con- Y tour embodying my invention, which collars areheld in the assembled form by the turning over of a portion of one ofthe sections comprisin the same with res ect to the other, such turnedover portion raving been previously reduced to facilitate such action.Fig. 9, shows acollar made of the members 25 and 26 which aresubstantially d-shspc in cross section, each having int-urned flanges27. These sections are secured together by reducing the margin 28 of thesection 25 and turning it down over the offset edge 29 of the section.26. The'nut 9 is employed in connection with this structure in themanner shown, and the peripheral walls -25 and 26 areapertured at 7 forthe passage of the set screw and counterbored to accommodate the head ofthe same. Fig. 10, shows a structure somewhat smular to that shown inFig. 9, having members 25 and 26 of substantially the same shape and'retained in the same manner, the dificrence being that the flanges 27form 2. complete inner peripheral wall by abutting on a substantiallycentral line'. The nut 9 15 employed in connection with this structure111 the same manner as with that shown in Fig. 9.

In Figs. 11 and 12, Ihave shown a form of collar made. of L-shapedmembers, in which the inner wait is omitted, the peripheral walls ofsaid members lying against each other and forming the outer wall of thecollar. The not 9 is retained against lateral displacement between theside walls of the structure by displacing a portion of the pe ripheralwall of the inner member in the manner already described and asindicated at 12, and held against radial movement by offsetting portionof the side walls 5 to rest beneath said not as indicated at- 31.

In completing the annulus or shaft collar, the members of the same areassembled-in a suitable manner; the nut being properly positioned andmaintained in such position by means of the set screw, or a suitablepin, which is passed through the apertures of the several members andthen said members are subjected to pressure whilecontined betweensuit-able dies whereby the securing means, such as compressing the metalof one mem ber withrespect to the other, are applied, and the membersforming the annulus or collar are thereby locked against displacement.Before removing the set screw or pin, the nut is confined in place bydis )lacing the metal of the members relatively tiercto, orimmediatelyaftcr removing the completed collar from the press, or ifdesired the metal of the one section to hold such nut may be displacedbefore the membels are secured toget-her.

I may, if desired, braze or electrically weld any and all of theabutting faces of the several forms of structures shown herein, and ifthis is done, the membcis will have the neces sary contact points, and Imay further harden the side wall or face of the res )ective eolhns whichcomes opposite the wor Itwill be noted that the outer member of the formof collar shown in Figs. 1, 2, 3, &c., is much heavier than the innermember and that the flange of the inner member overlies the nut and isdisposed between the same and the outer shell. This construction isespecially strong; the tendency of the nut to be forced outwardly whenthe screw is'turned down against the shaft be g fully rcsis ted by thewalls with which the nut contacts.

I further found that when using an outer member for the shaft collarhaving a shell of ample thickness, that it is possible to form a cup inthe wall of the same which may be tapped to receive a set screw andthereby obviate the necessity of employing a nut,

and such structure I have shown iii-Figs- 16,.

17, 18, 19 and 20- In the structure shown in Figs. 16 and 17, 'a portionof the peripheral walls of the inner are afterwards bored and-threadedto receive the set screw; the wall of the outer member being furthercountersunk or depressed at 41 to accommodate the head of said setscrew. In the farm of structure shown in Fig; 18, the inner member iscupped and bored at 40, and in the form shown in Fig. 19, the outermemher is cupped and bored at 41. In these lattcr instances, theuneupped member is simply apertured for the passage of the' set screw.

In the structure shown in Fig. 20, the peripheral wall of the innermember as well as the peripheral wall of the outer member are bothcupped as at 40 and 41, then bored and ,threaded, and by preference theedge of one o of these cupped and threaded portions is provided with abeveled seat 42 for the rccep ti'on of the end -11 of the other member,beveled accordingly. Other arrangements pro- 7 vidin for the threadingof a portion of the g5 shell for the reception of the nut may beprovided for without departing from my invention. lVhen employingstructures of this character, the members forming the collar may besecured together in an ncrs hereinbefore described, or may employ astructure having provision for reception of two set screws, the presenceof wluchwill render unnecessary any other means of securing the membersforming the shaft collar. It will be understood, of course, that theintegral threaded portion of the collar for the reception of a screw maybe made in connec tion with any of the forms of collar illust-rated inthe several cross sectional views.

In finally assembling the members forming the shaft collar, the bottomof the en forming the inner member is still in p ace, as shown by thebroken line in Figs. 3 and 5.

After the portion of the peripheral wall of the outer member is turneddown securing the two members together, this bottom is cut. out, leavingthe. structure as shown-by the full lines, ready to be placed upon ashaft.

The displacing of the metal in one of the peripheral walls of thestructure serves to locate the nut in line with the apertures in saidpcri )heral wall or walls, but cannotserve to, firm y fix said nut inplace, inasmuch as there must he suflicient room to permit, freeinsertion of said nut. It is desirable, of course, to preventanyrattling of the nut in the finished collar, and to accomplish this thefinished collar is placed in a die and a depression 13 formed in theinner peripheral wall adjacent the aperture for the passage of the setscrew, as indicated in the drawings. By this means a seat is formed forthe nut, and the latter is held firmly between the-same and the displaced portions of the peripheral wall as mdr- 125,

cated.

I claim: 4 '1. A hollow sheet metal annulus or collar for shafts,comprising inner and outer mem-.

bers forming a hollow annular space, each of of the man- 90 I i a l saidmembers having a peripheral wall and a side wall integral therewith, oneof of said peripheral walls being reduced at its edge and turned downagainst the side wall of the other member whereby said members may beretained in rigid relationship, and an internally threaded elementconfined in the hollow space formed by said members, said peripheralwalls being apertured in line with the opening in said threaded member.

2. A hollow sheet metal annulus or collar for shafts, com rising innerand outer members forming a iollow annular space, each of said membershaving a peripheral wall and a side wall integral therewith, the wallsof the outer member being considerablyheavicr than those of the innermember and the peripheral wall of the outer member being reduced at itsedge and turned down against the side wall of .the other member wherebysaid members may be retained in ri' 'id relationship, and an internallythreaded element confined in the hollow space formed by said members,said periheral walls being apertured in line wit 1 the opening in saidthreaded member. 5

3. A hollow sheet metal annulus or colla for shafts, comprising innerand outer mcmbers substantially L-shaped in cross section and forming ahollow annular space,each of said members having a peripheral wall and aside wall integral therewith, .he walls of the 011;?" member beingconsiderably heavier than those of the inner member and the peripheralwall of the outer member being reduced at its edge and turned downagainst the side wall of the inner member whereby said members may beretained in rigid relationship, and an internally threaded elementconfined in the hollow space formed by said members, said cripheralwalls being apertured in line witl the opening in said threaded member.

4. The combination, in a shaft collar, of a pair of members each havingperipheral walls and side walls integral therewith, means formaintaining said members in proper-relationship and securing them to-vgether so as to form a hollow closed space, one of said members having aflange, and a nut disposed in said hollow space and bear ing againstsaid flange.

5. The combination, in a shaft collar, of inner and outer members eachhaving a pcripheral wall and a side wall integral therewith, the outermember having thicker walls than the inner member, means for maintainingsaid members in proper relationship and securing them together to form ahollow space, one of saidsections having a flange, and a nut disposedinsaid hollow space, said nut bearing against the outer member and theflange of the inner member. Y

6. A shaft collar comprising inner and outer members each having :5peripheral wall or flan e and a side wall at rightangles thereto andintegral therewith forming an annularspmTa seescrew, andaneans carriedby said collar within said space for the reception of said set screw,the outer peripheral wall of said collar being constructed for thereceptionof the headof said screw, and means integral with one of themembers for holding the means within the annular space in lace.

7. A siaft collar comprising inner and outer members each having aperipheral wall or flange and a side wall at right angles thereto andintegral therewith forming an annular space, the walls of one of saidmembers being greater in thickness than the walls of the other member, aset screw, and means, carried by said collar for the reception of a setscrew, the outer peripheral wall of said collar being constructed forthe reception of the head of said set screw, and means integral with oneof the members for holding the means within said space in place.

8. A hollow sheet metal annulus or collar for shafts comprisingdisk-like. members each having a flange and together forming a 1101--low annular space, a nut located within said space, and means carried byone of the members for retaining said nut in proper position, the flangeof the other member having a seat for said nut which serves with theretaining means to firmly bind said nut in ulace.

9. A hollow sheet metal annulus or collar for shafts comprising membershaving side walls and inner and outer peripheral walls forming a hollowspace, a nut located within said space, and a set screw for said nut,one of said members having a seat for retaining the nut in properposition, and the peripheral walls having apertures in line with theopening of said nut and one of them being counterborcd to accommodatethe head of the set screw.

10. The combination, in a shaft collar or annulus of sheet metal, ofinner and outer members having integral peripheral and side walls, saidinner member having a flange lying against the peripheral wall of theouter member, a nut disposed within the space formed by said members,and a set screw for said nut, said nut having a portion of its surfacerounded to receive the flange of the innor member.

11. The combination, in a shaft collar or annulus of sheet metal, ofinner and outer members having integral peripheral and side walls, saidinner member having a flange lying against the peripheral wall of theouter member, a nut disposed within the space formed by said. members,and a set screw forsaid nut, said nut being tapped out of center andhaving a portion of its surface rounded to receive the flange of theinner member.

12. In a sheet metal shaft collar, an mncr member having a cylindricalportion conforming to the shaftand a side or wall mte gral therewithextending outwardl v at a right angle therefrom, a set screw said shafta'conformmg portion being aperturcd for the pas age of said set screw,and the outwardly extending side or wall having a flange disretainingsaid inner peripaeral and side wall posed concentrically 'with respectto said shaft conforming portion.

13. A hollow sheet metal collar for shafts comprising a pair of L-shapedmembers, one

of said members forming an outer peripheral wall and a side wall, whilethe other forms a shaft lit-ting sleeve and a side wall, the outer 5edge of the side wall of said last mentioned member being llanged toform a second pcri \heral wall lying against the first, a threadedelement confined within the hollow annular space formed b vsaid members,and means 0 for securing said members together.

14. A hollow sheet metal collar for shafts comprising a pair of L-shapedmembers, one of said members forming an outer peripheral wall and a sidewall, while the others form a shaft fitting sleeve and a side wall, theouter edge of the side wall of said last mentioned member being flangedto form a second peripheral wall lying against the first, a threadedelement confined within the space formed 0 b said members, and meansintegral with said first mentioned peripheral wall for firmly bindingsaid L-shaped members together.

15. A shaft collar of sheet metal compris ing a pair of members, oneconsisting of an 5 outer integral side and peripheral wall, and theother consisting of an inner integral pe ripheral and side wall, saidmembers being suitably secured together and said peripheral walls oeingapertured, a nut confined 0 within the hollow annular space formedbysaid walls, and a set screw for said nut, the

apertured portion of the outer peripheral wall being of sullicient sizeto accommodate the head of the set screw.

5 16. A shalt collar of sheet metal comprising a air of members, oneconsisting of an outer integral side wall and peripheral wall, and theother consisting of an inner integral peripheral wall and side wall,said members 0 being suitablv secured together and said peripheral wallsbeing a )ertured, a nut confined within the hollow annular space formedby said walls, and a set screw for said nut, the apertured portion ofthe outer 5.-peripheral wall being of suliieient size to accommodate thehead of the set screw, said members having integral projections forholding said nut rigidly in position in line with said apertures.

17. A shaft collar of sheet metal comprising a. air of members, oneconsisting of an outer integral side and )eripheral wall, and the otherconsisting oi" an inner integral peripheral and side wall, said membersbeing l l l l l l l l l rigidly in position with relation thereto.

18. A shaft collar of sheet metal compris iag a pair of members, onehaving an outer integral side and peripheral wall, and the other havingan inner integral peripheral and side wall, said members being suitablysecured together and said peripheral walls being apertured, a nutconfined in the space between said walls, and a set screw for said nut,the apertured portion of the outer pcripheral well being of sullicientsize. to accommodate the head of the set screw, means integral with saidouter eripheral wall for retaining said inner perip ieral' and side wallrigidly in position, said members having integral projections 'forholding said nut rigidly in position in line with said apertures.

19. A sheetmetal shaft collar comprising a pair of L-shaned members eachhaving a side wall and a ilange at right angles thereto, means forholding said members together, a. nut disposed between the sidewalls'of' said structure, said L -shaped members having integralportions for retaining said nut in place, and a set screw for said nut,the peripheral wall of the collar being constructed for the reception ofthe head of said set screw. 20. The combination, in a shaft collar orannulus of sheetmetal, of inner and outer members having integralperipheral and side walls, said inner member having afla-nge lyingagainst the peripheral wall of the outer member, a nut disposed withinthe space formed by said members, and a set screw for said nut, saidn'ut having a portion of its surface reduced to receive the flange ofthe inner member.

21. The combination, in a shaft collar or annulus of sheetmetal, ofinner and outer -membeis having integral peripheral and side and havinga portion of its surface reduced to receive. the llange of the innermember.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

owann T. HArLowELL,

-Witnesses:

MURRAY'G. Bovnn, WM. A. BARR.

